AT&T recently launched its new “AT&T Call International” VoIP application that, exactly as its name implies, allows its customers to place international phone calls from their AT&T’s phones using a Wi-Fi connection anywhere in the world. AT&T’s per-minute VoIP rates are cheaper than its international roaming plans and, judging from AT&T’s product page, calls placed to wireline phones appear to be more affordable than those placed to wireless phones. Customers will be billed for calls placed through the app directly on their credit cards at the end of each monthly billing cycle. AT&T Call International is available for free from the Android Market, BlackBerry App World and in Apple’s iOS App Store.